[INFO] fetching crate serbia 0.4.3...
[INFO] testing serbia-0.4.3 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate serbia 0.4.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate serbia 0.4.3
[INFO] finished tweaking crates.io crate serbia 0.4.3
[INFO] tweaked toml for crates.io crate serbia 0.4.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serbia 0.4.3 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to highest compatible versions
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] [stderr]       Adding syn v1.0.109 (available: v3.0.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2
[INFO] running `Command { std: "docker" "start" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling serbia v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/item.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stdout]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.26
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling syn v3.0.6
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling serbia v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/item.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stdout]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/04_mem_leaks.rs:45:16
[INFO] [stdout]    |
[INFO] [stdout] 45 |     struct Foo(Arc<String>);
[INFO] [stdout]    |            --- ^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[u8; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> tests/03_serde_field_attrs.rs:49:48
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     let mut arr: Self::Value = std::mem::MaybeUninit::uninit().assume_init();
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                |
[INFO] [stdout]    |                                                this code causes undefined behavior when executed
[INFO] [stdout]    |                                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/item.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stdout]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 12.07s
[INFO] running `Command { std: "docker" "inspect" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/item.rs:71:29
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stderr]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stderr]    |                                                                             ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `serbia` (lib) generated 1 warning (run `cargo fix --lib -p serbia` to apply 1 suggestion)
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> tests/04_mem_leaks.rs:45:16
[INFO] [stderr]    |
[INFO] [stderr] 45 |     struct Foo(Arc<String>);
[INFO] [stderr]    |            --- ^^^^^^^^^^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the type `[u8; 42]` does not permit being left uninitialized
[INFO] [stderr]   --> tests/03_serde_field_attrs.rs:49:48
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let mut arr: Self::Value = std::mem::MaybeUninit::uninit().assume_init();
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                |
[INFO] [stderr]    |                                                this code causes undefined behavior when executed
[INFO] [stderr]    |                                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `serbia` (test "04_mem_leaks") generated 1 warning
[INFO] [stderr] warning: `serbia` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `serbia` (test "03_serde_field_attrs") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/serbia/fb906dafd553091f/out/serbia-fb906dafd553091f)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test item::tests::no_serde_derive ... ok
[INFO] [stdout] test item::tests::detect_deserialize ... ok
[INFO] [stdout] test item::tests::parse_big_array_len ... ok
[INFO] [stdout] test item::tests::detect_serialize_deserialize_qualified ... ok
[INFO] [stdout] test item::tests::detect_serialize_deserialize ... ok
[INFO] [stdout] test item::tests::manual_bufsize ... ok
[INFO] [stdout] test item::tests::detect_serialize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/01_basic_use.rs (/opt/rustwide/target/debug/build/serbia/e9c07378e6d0046a/out/01_basic_use-e9c07378e6d0046a)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test regular_struct_roundtrip ... ok
[INFO] [stdout] test constant ... ok
[INFO] [stdout] test tuple_struct_roundtrip ... ok
[INFO] [stdout] test generics ... ok
[INFO] [stdout] test enum_roundtrip ... ok
[INFO] [stderr]      Running tests/02_serbia_field_attrs.rs (/opt/rustwide/target/debug/build/serbia/da02397514ea5d8e/out/02_serbia_field_attrs-da02397514ea5d8e)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test skip_field ... ok
[INFO] [stdout] test type_alias ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/03_serde_field_attrs.rs (/opt/rustwide/target/debug/build/serbia/f61ddded91ea1d0e/out/03_serde_field_attrs-f61ddded91ea1d0e)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stderr]      Running tests/04_mem_leaks.rs (/opt/rustwide/target/debug/build/serbia/06eba1e5da70b5f5/out/04_mem_leaks-06eba1e5da70b5f5)
[INFO] [stdout] test skip_field ... ok
[INFO] [stdout] test skip_serializing ... ok
[INFO] [stdout] test skip_serializing_if_false ... ok
[INFO] [stdout] test skip_serializing_if_true ... ok
[INFO] [stdout] test serialize_deserialize_with ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test deserializing_failure_mem_leak ... ok
[INFO] [stdout] test mem_safety_regression_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serbia
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - serbia (line 181) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 216) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 281) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 160) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 123) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 196) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 142) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 99) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.56s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2", kill_on_drop: false }`
[INFO] [stdout] 5e9ca47a989d62a8d35dab15c67d6e0ef429db8f2a6a8e3eeb2936dcd11e47c2
